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Testing the fuel pump S-10 Chevy pickup


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patastinky's Avatar
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August 29th, 2010, 11:58 AM   #1  
Testing the fuel pump S-10 Chevy pickup

Hey Guys, new here and new to Chevy pickups. I just picked up a 1995 S-10 however it does not start. When I turn the key to ACC I do not hear the fuel system pressurizing. I assume it's the fuel pump. Are there any test that i can i run other then turning the key? Anyone know where the relay/fuse is for it? I'd hate to have to drop the tank to find out it was an easy fix.

By the way I have already changed the fuel filter on the pickup.. Thank you in advance.

 
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salmon arm BC

September 5th, 2010, 12:07 PM   #2  
pull the fuel pump relay, and replace, also check the fuse for it, if they check out, drop the tank and clean up the ground, if all good you can pull the pump and put power to it direct from the batt with a couple wires

 
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September 11th, 2010, 9:42 PM   #3  
Posted By: 2wd-K5 pull the fuel pump relay, and replace, also check the fuse for it, if they check out, drop the tank and clean up the ground, if all good you can pull the pump and put power to it direct from the batt with a couple wires
Thanks dude. Can you point me in the right direction. I don't know where the fuel pump relay is located nor the fuse. I'm gonna drop the tank tomorrow.

 
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September 12th, 2010, 4:21 PM   #4  
Posted By: 2wd-K5 pull the fuel pump relay, and replace, also check the fuse for it, if they check out, drop the tank and clean up the ground, if all good you can pull the pump and put power to it direct from the batt with a couple wires
UPDATE: Since the s10 pickup is a 1995 after doing a little bit of a google search i was able to locate where the fuel pump relay is... Correct me if i am wrong, but I opened up the glove box and removed the cover that says "RELAY" i read that the 2 relays on the left side are for the fuel pump relay and fuel control relay.. The one on the far right is for the horn. I tested the relays by pulling them out and popping them into the horn side. I then tried to honk the horn, but it wouldn't sound. I doubt that all three of the relays are bad, however i can't explain why the horn won't sound. Is there anything else i can do to test these relays..?

I checked the fuse box to make sure that the horn fuse wasn't blown and it's not.. I'm trying to do everything that i can before having to drop the tank... Can anyone confirm that the relays that i've tested are the correct ones for the fuel pump?


Diagram of how the relay's are set up

| relay |.....|relay|.....|relay|

fuel pump....fuel control....horn ??

 
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salmon arm BC

September 12th, 2010, 5:35 PM   #5  
never know they could all be blown test them at an auto parts store if thats the case though and they are all blown, then there may be another problem like a ground or something that is blowing all the relays though

 
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September 29th, 2010, 6:46 PM   #6  
Hey guys just an update.. I dropped the fuel tank and replaced the fuel pump.. That pump and the inside of the tank were soooooo bad that i had to get a new tank. I put everything back together and in place. I turned the key to ACC to see if the pump would prime and wouldn't you know it.. The lines on top of the fuel pump sprung a leak. Now i have to drop the tank again and replace the lines. Does anyone know where i can get those lines or what they are called..

 
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October 4th, 2010, 12:34 PM   #7  
update: s10 still isn't starting.. is there anything i can check before the injectors that might be clogged or blocked? There is no fuel on the return line either.. sigh

 
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salmon arm BC

October 30th, 2010, 10:08 PM   #8  
so the fuel pump works but it still wont start?
do you have spark?
is the fuel filter new?

 
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April 14th, 2014, 5:50 PM   #9  
how many volts should be going to the fuel pump, on my 91 S-10?

 
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June 14th, 2014, 11:42 PM   #10  
Posted By: patastinky Hey Guys, new here and new to Chevy pickups. I just picked up a 1995 S-10 however it does not start. When I turn the key to ACC I do not hear the fuel system pressurizing. I assume it's the fuel pump. Are there any test that i can i run other then turning the key? Anyone know where the relay/fuse is for it? I'd hate to have to drop the tank to find out it was an easy fix.

By the way I have already changed the fuel filter on the pickup.. Thank you in advance.
Hey bro. I'm mike. The fuel pump. Relay is in the clove box in side the truck .good luck.

 
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